Messages in this thread | | | Subject | RE: [PATCH] slub Discard slab page only when node partials > minimum setting | From | "Alex,Shi" <> | Date | Thu, 08 Sep 2011 08:43:59 +0800 |
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On Wed, 2011-09-07 at 23:05 +0800, Christoph Lameter wrote: > On Wed, 7 Sep 2011, Shi, Alex wrote: > > > Oh, seems the deactivate_slab() corrected at linus' tree already, but > > the unfreeze_partials() just copied from the old version > > deactivate_slab(). > > Ok then the patch is ok. > > Do you also have performance measurements? I am a bit hesitant to merge > the per cpu partials patchset if there are regressions in the low > concurrency tests as seem to be indicated by intels latest tests. >
My LKP testing system most focus on server platforms. I tested your per cpu partial set on hackbench and netperf loopback benchmark. hackbench improve much.
Maybe some IO testing is low concurrency for SLUB, maybe a few jobs kbuild? or low swap press testing. I may try them for your patchset in the near days.
BTW, some testing results for your PCP SLUB:
for hackbench process testing: on WSM-EP, inc ~60%, NHM-EP inc ~25% on NHM-EX, inc ~200%, core2-EP, inc ~250%. on Tigerton-EX, inc 1900%, :)
for hackbench thread testing: on WSM-EP, no clear inc, NHM-EP no clear inc on NHM-EX, inc 10%, core2-EP, inc ~20%. on Tigertion-EX, inc 100%,
for netperf loopback testing, no clear performance change.
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